Effects of External KCI on Electrical Properties and K^+(^<86>Rb) Transport in the Elongating Region of Intact Phaseolus mungo Roots
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概要
- 論文の詳細を見る
Two simultaneous measurements, extracellular potential V and K^+(<86>^Rb) transport, and the intracellular potential of cortical cell E and potential V, were used to study the effects of external KCl on two-day-old bean roots. High, external KCl concentrations (>10 mM) markedly enhanced K^+ loss from tissues in the elongating region to the external solution and induced depolarization of the membrane potential difference (PD = V - E). When Phaseolus roots were returned to a solution with a lower concentration of K^+ the K^+ loss and the potential difference, PD, were restored to their previous values. K^+ transport from other parts of the root to the elongating region, however, did not recover, and the potential, E, increased. These results clearly demonstrate that treatment of Phaseolus roots with a high external K^+ concentration inhibits K^+ transIocation through the stele to the elongating cortical cells and is dependent on depolarizatioh of the intracellular potential.
- 日本植物生理学会の論文
著者
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Sakata M
Department Of Instrumentation Engineering Faculty Of Science And Technology Keio University
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Sakata Makoto
School Of Medicine Kyorin University
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Sakata Makoto
Department Of Applied Physics Faculty Of Engineering Nagoya University
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Ohta E
Keio Univ. Yokohama Jpn
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Ohta Eiji
Department Of Agricultural Chemistry Faculty Of Agriculture Kyoto University
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Sakata M
School Of Medicine Kyorin University
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Ishikawa Hideo
Department Of Instrumentation Engineering Faculty Of Science And Technology Keio University
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OHTA Eiji
Mole. Func. Lab., Natl. Food Res. Inst.
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Matsuura Keitaro
Department of Instrumentation Engineering, Faculty of Science and Technology, Keio University
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Yamamura Sadao
Department of Instrumentation Engineering, Faculty of Science and Technology, Keio University
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Ishikawa Hideo
Department Of Botany The Ohio State University
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Yamamura Sadao
Department Of Instrumentation Engineering Faculty Of Science And Technology Keio University
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Matsuura Keitaro
Department Of Instrumentation Engineering Faculty Of Science And Technology Keio University
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Ohta Eiji
Department of Instrumentation Engineering, Faculty of Science and Technology, Keio University
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